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A287588
Number of set partitions of [n] such that all absolute differences between least elements of consecutive blocks and between consecutive elements within the blocks are not larger than nine.
2
1, 1, 2, 5, 15, 52, 203, 877, 4140, 21147, 115975, 657422, 3827003, 22740552, 137213894, 837118303, 5146402217, 31802294171, 197197352995, 1225688654009, 7632924133053, 47595564684961, 297036512468620, 1854733471252332, 11584802491032094, 72372543412986244
OFFSET
0,3
LINKS
FORMULA
a(n) = A000110(n) for n <= 10.
CROSSREFS
Column k=9 of A287417.
Cf. A000110.
Sequence in context: A229226 A343671 A276726 * A287281 A287259 A287671
KEYWORD
nonn
AUTHOR
Alois P. Heinz, May 26 2017
STATUS
approved